Electric igniting device.



ELECTRIC IGNITING DEVICE. APPLICATION FILED FEB. 13, 1908.

no MODEL. z snmssnnm' z;

PATENTED SEPT. 8,1903- l owantoz Patented September 8, 1903.

l jU IT D ST TEs PATENT OFFIC HARRY B. MCNULTY, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR 5 TO THE MCNULTY INGANDESCENT GAS LIGHTER COMPANY, A CORPORA- TION OF THE DISTRICT on COLUMBIA.

ELECTRIC IGNIT'ING DEVICE;

SPECIFICATION forming part of Letters Patent No. 738,624, dated September 8, 1903.

c Application filed February 13, 1908. Serial No. 143,256. (No model.)

To aZZ whom it may concern:

Be it known that I, HARRY B. MONULTY, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Electric Igniting Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present, invention relates to electric igniting mechanism for gas-burners, and particularly to that type of burner employing an incandescent mantles The Object in view is .the provision of an electric igniting mechanism capable of application without alteration of the parts of a burner already in use.

A further object is the provision of an electric igniting mechanism capable of use in connection with either the ordinary gas-jet or with the mantle type of light, the igniting l valve controlling the same, a by-pass, and

mechanism being interchangeable without alteration. 1

With these and other, objects in view the invention consists of a gas-supply pipe, a

electric means for igniting a charge from said bypass, said valve permitting escape mission of charge to theby-pass.

The invention also cons1sts-,1n combination H with a supply-pipe, of a valve, a by-pass insulated from said valve, an electric wipe spark-finger carried by said by-pass, and a wipe-spring designed to engage the same for producing an are for igniting the charge from said by-pass. t

It further consists of certain other novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described. I

Fig. 4 represents of gas through the main pipe prior to the adan edge view of the same. Fig. 5 represents a longitudinal vertical section taken on the plane of line b b of Fig. 4. Fig. 6 represents an enlarged detail fragmentary section taken on the line Cl; a of Fig. 5. Figs. 7, 8, and 9 represent fragmentary sections illustrating the valve in various positions relative to the I main supply-pipe and the by-pass.

In the igniting of burners or lights employing incandescent mantles it is common toprovide aby-pass and a wipe spark-igniter therefor; but such bypass usually is extended within the flue of the burner, necessitating a 7 special construction of base or support for such flue, and the common forms of igniting devices have been found objectionable for several other reasons, among which might be mentioned the fact that the ignition takes I place before the mantle is filled with gas, thereby endangering the mantle and occasionally causing its collapse.

A further objection arises from the present form of electric device forigniting the mantle type of lamp in that the charge of gas through the by-pass isburned without mixing withthe atmosphere, imperfect combustion resulting and the carbonation or smoking of the mantle taking place. I contemplate overcoming allot thesexas well as other difficulties, by the employment of the present improvements, an embodiment of which is disclosed in the accompanying drawings, in which-=- 1 indicates a supply-pipe of a gas-burner, threaded on the end of which is a tubular extension 2, formed intermediateits length with a valve-housing 3, within which is arranged a rotary valve 4, formed with a transverse vertical bore 5, designed to register with the bore of tube 2 for permitting passage of gas.. Each end of the bore 5 is enlarged or formed bell-shaped, as at 6 and 7, forpurposes hereinafterrnentioned. Atransverseboresleads laterally from the bore 5 to the outer edgeof the valve 4 with its outer end nearer the enilargement 7 than it is to the enlargement 6.

A tube 9 communicates through the valvea reduced upper end or nozzle 10, discl1arg- A ing into a continuation of the by-pass formed with a tube 11, which tube is apertured, as

v at 12, for permitting an admixture of the gas discharged from nozzle 10 with the atmosphere within tube 11. The tubes 9 and 11 are secured together by a suitable piece of insulating material 13. The igniting mechanism isthe same whether a mantle, as dis closed in Fig. 1, is employed or a tip, as shown in Fig. 3, is used, the tube 2 being externally threaded at its upper end, as at 14, for the reception of the flue-support (shown'in Fig. 2) and having its bore enlarged, as at 15,'for the reception of a tip. Spaced a suitable distance from the plane of discharge from the end of tube 2 is positioned the nozzle or discharge end 16 of pipe 11, said pipe being bent in such manner as to extend from the point of communication through housing 3 about tube 2 into substantially the vertical plane of the stem 17 of valve 4. A right angle or other suitable bar 18 is fixed to stem 17 for efiecting rotation of valve 4, and a pendent operating-handle 19 may be carried by one arm of said bar for facilitating such operation. Y The wall of housing 3 is cut away in segmental form, as at 20, or approximately a quarter-circle, and a laterally-projecting stud 21 extends from the stem 17 and is designed to engage the shoulders at the ends of said cut-away portion for limiting the degree of rotation of the valve 4. At the outer end of that arm or'bar 18 opposite the one carrying handle 19 is provided a coiled or other suitable spring 22, provided with a wipe-arm 23, designed in operation to engage a finger 24, extending across the plane of dis charge from nozzle 16 and carried by a ring 25, which ring is provided with a bindingpost 26 for receiving the battery-wire, the arm 23, spring 22, bar 18, and tubes 2 and 1 forming the common return.

In operation the present improved igniting device may be applied Without alteration to either the jet or the mantle form of burner, and in using the same in connection with a mantle, the entire operation consists in simply pulling down the handle 19. This act on the part of the operator rotates valve 4c, moving the same from its closed position, as indicated in Fig. 9, to the position shown in Fig. 8. As soon as the valve arrives in this position gas passes through the bore 5 and up into the mantle, filling the same during the further rotation of the valve. Further movement of the valve brings the same into the position indicated in Fig. 5,-

. with its bore 8 registering with the by-pass,

whereby a charge of gas is directed through said pass. At this point the spring-arm 23 engages finger 24, swinging across the same, and, breaking contact, forms an arc, whereby the charge from the by-pass is ignited. This charge being a mixture of air and gas produces a blue flame free from the particles of combustion, which flame passesup through the apertures in the base supporting the flue surrounding the mantle and ignites the charge of gas within said mantle, the said mantle having been fully charged prior to the discharge from the by-pass. The valve moves on to the extreme of its location as limited by stud 21, when it is in the position shown in Fig. 7, wherein the bore 8 is no longer in register with the by-pass, butthe bell ends of bore 5 retain said bore in register with the vertical bore of tube 2. g

If it is desired to use a jet-flame light, the devices used in connection with the mantle are removed simply by threading the connecting-sleeve off of the upper end of tube 2 and placinga tip Within the enlargement 15. With the parts in this position the igniting operation is accomplished in precisely the same manner as described. I

At times it may be desirable not to utilize the entire pressure .of gas within the main, and regardless of what form of burner is employed the light may be turned down by simply moving the handle 19 upwardly and rotating the valve 4 backwardly to substantially the position illustrated in Fig. .8. In this position the amount of discharge of gas may be eifectually controlled while retaining the by-pass in a closed condition.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an igniting device, the combination with a supply-pipe of a valve controlling the same, a by-pass, and electric means for igniting the charge from said by-pass, said valve being bored for permitting the escape of gas through the main pipe prior to the admission of a charge to the by-pass, the charge being admitted to the by-pass and the same being closed by the continuous movement of the valve in one direction, of rotation, substantially as described.

2. In a gas-igniting mechanism the combination with a main supply-pipe of a section of by-pass communicating therewith, an insulated bushing surrounding the discharge end of said section of by-pass and enlarged tubing inclosing said discharge end engaging said bushing and forming a continuation of the by-pass, said bushing forming a snug fit between the section of by-pass and enlarged tube and an aperture being formed in said tube in the plane of discharge from said section of by-pass, and electrical igniting mechanism for the discharge from said enlarged tube.

3. In a'device of the classdescribed the combination with a supply-pipe and a by-pass communicating therewith and electric igniting means for the discharge from'the by-pass of a valve controlling the passage of gas within said pipe, such Valve being formed with a main bore provided with enlarged bell-shaped ends and an auxiliary bore so arranged that rotation of said valve in one direction will IIO open communication first through the main supply-pipe and then open and close communication with said by-pass.

4. In a gas-igniting mechanism the combi nation with a main supply-pipe of a section of by-pass communicating therewith, an insulated bushing threaded onto said section of by-pas's, an enlarged section of by pass threaded onto said bushing and forming an 

